Cached Exchange Mode is one of the best features that Exchange/Outlook offers to its users. It allows users to work in offline mode. With cached Exchange mode, Outlook creates a copy of OST data on the local machine in OST file format which stores all the items that are already on the Exchange Server. The cached Exchange Mode facilitates offline working.

However, sometimes users face an error “Exchange is currently in recovery mode” error while synchronizing the OST file with Exchange Server.

Reasons for the Error “Exchange is Currently in Recovery Mode”

There are many possible reasons due to which the “Exchange is currently in recovery mode” error occurs. Some of the main reasons are;

  • When the cached copy of mailbox in Outlook is different than the one in MS Exchange.
  • When users try to reset the Exchange, mailbox keeping the cached Exchange mode enabled, a new OST file is created by MS Outlook and retains the old offline OST data on the local system.
  • When the mailbox is migrated to another version of Exchange.
  • A slow and poor network connection between the client and the server.
  • Problem with DNS configuration as well as DNS settings.

How to Fix This Error?

There are generally three different methods to resolve this error. Here we are mentioning all the three ways that can fix this error.

    1. Disabling and Enabling the Cached Exchange Mode
      The first and simplest method to solve this error is to disable and enable the Cached Exchange Mode. First, users have to disable the cached mode and delete the old OST file, and then restart the MS Outlook and enable the cached exchange mode. To understand better, follow these steps:


        • Open Outlook and go to “File” and choose “Account Settings.”
        • Now, select the mail account and click on “Change” option. A window will appear on your screen like this;

      select the mail account and click on “Change” option

      • Disable the “Use cached exchange mode” from here
      • Now, delete the offline OST file from the mailbox.
      • Go to Control Panel, choose the Mail tab and click on profiles, and delete the existing profile.
      • Now restart Outlook and create a new profile.
  1. Creating a New OST File
    When you change Exchange Server, then you’ll have to create a new OST file because the existing OST file might not match with the new Exchange Server properly. Follow these steps to create a new OST file.


    • In the Control Panel, click the “Mail” option.
    • Now, select “Show Profiles.” A window will open like this:
      click the “Mail” option
    • Click the “Add” button to add a new profile. Give a name to the profile and click “OK.”
      Note: Do not keep MS Outlook open while performing these steps.

OST to PST Converter

If you want to recover unsaved OST data from your old OST files, you need to convert OST files to PST using a third-party solution. Then OST to PST converter is the best option. This OST Recovery tool can recover any corrupted OST file, and also provide the option to convert it into a PST file.

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Some of the main features of this tool are:

  • Preview all the items of the file before saving it.
  • Convert OST files to Outlook PST, & MBOX formats.
  • Exports OST data to live Exchange & Office 365.
  • Restores emails to Gmail/Outlook accounts.
    To convert an OST file with OST to PST converter, follow these simple steps;


    • Download the tool from OST to PST and install it on your system.
    • After the installation, launch the software, and a window will appear on your screen. Select the file that you want to convert and click “Next.”
    • It will take a few seconds to complete the scanning process. Once the scanning of the file is complete, you’ll be able to see all the mailbox items in the left pane of the software. Select any item from the folders for its preview like this;
    • Now, from right pane of the tool, you can select the required saving option and save this file in the desired format, such as PST, MSG, EML or Office 365.
    • Choose filter options like Item Type and select what items to move and then click Next.
    • Now, click on Browse and add the destination folder location for the converted file. Choose saving preferences and other option if needed. Click Finish.
    • The conversion of OST file to PST is started. Wait for it to complete and then check the specified destination folder for the converted PST file.
    • Hence, the OST recovery to desired destination is successfully completed.

With the help of this tool, you can quickly recover and convert any OST to PST file or directly migrate it to Office 365 or Live Exchange Server.

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Final Words

Small errors can often create a big problem, especially when you are working on Exchange Server or Outlook. And with the “Exchange Server is currently in recovery mode” error, it becomes very difficult to access the offline OST file. So, consider the above three methods to get rid of this type of errors.